1. Unyango lwangaphambi konyango: Ukuze kususwe ioyile engeyomfuneko, intsalela yokuwelda, kunye nokungcola kumphezulu womzimba wesithuthi ovela kumzi-mveliso womzimba, ifilimu ye-zinc phosphate (3~5)㎛) isetyenziswa kumphezulu womzimba ukwandisa ukunamathela ngexesha lenkqubo yokugquma (i-electrodeposition). Ngenjongo yokukhusela ukugqwala komzimba wemoto.
- Ukucoca kwangaphambili: Emva kokuhlanganisa umzimba, uhlanjwa ngamanzi ngaphambi kokuba ususwe amafutha.
- Ukususa ioyile emzimbeni wemoto: Kususa ioyile emzimbeni wemoto.
- Ukuhlamba okunemiqathango: Isixhobo sonyango esine-titanium njengesixhobo esiphambili, esidala inani elikhulu lee-colloids kumphezulu wesinyithi ukwandisa ukusabela kokwenza ifilimu ye-zinc phosphate exineneyo ukuvelisa iikristale ezincinci nezixineneyo.
- Ifilimu ye-Zinc phosphate: Ifilimu ye-zinc phosphate isetyenziswa ukomeleza ukunamathela kwe-undercoat kunye nokuthintela ukusabela kokugqwala.
1) Ukukrola kuqala kwinxalenye ye-anode yeshidi lesinyithi kwisisombululo sokugquma
2) Ngokuxhomekeke kumsinga wokugqwala, ii-cations zisetyenziswa kwi-cathode, kwaye i-pH ye-interface iyanyuka.
3) I-Colloid phezu komphezulu iba yi-nucleus ize iqine
- I-oven eyomileyo ngamanzi: Inkqubo yokususa ngokupheleleyo umswakama kwi-substrate emva kokuba inkqubo yangaphambi konyango igqityiwe.
※ Ukudluliselwa kobushushu nokomisa ngesandla
Emva kokugquma umzimba ngefilimu ye-zinc phosphate ( ), yihlambe ngamanzi uze uyomise ngesandla. Ukomisa ngesandla yinkqubo yokususa ngokupheleleyo umswakama kwinto eza kufakwa irhasi uze wenze inkqubo elandelayo yokupeyinta. Phakamisa ubushushu ukuze ukhuphe umswakama ngokudluliselwa kobushushu. Ukomisa (ukufuma) yinto eyenzekayo xa ubushushu bomphezulu oqinileyo odibana nawo buphantsi kuneqondo lokubila kwaye uxinzelelo lomoya luphantsi kunoxinzelelo lomphunga. Kuya kwenzeka utshintsho lwesigaba. Ubushushu kunye nexesha elifunekayo kwisithando sokomisa esisikiweyo ngesandla ziyahluka ngokuxhomekeke kwizinto, ubukhulu, kunye nemilo yento eza kufakwa irhasi. Ngokwesiqhelo, imizuzu eli-10 kwi-120 ~ 150℃ ixhaphakile, kwaye isizathu sokunyusa ubushushu kukunyusa uxinzelelo lomphunga wamanzi oluhambelana nolo bushushu kunye nokomisa ngokukhawuleza ngokubonelela ngamandla obushushu angaphezulu. Ngeli xesha, akufuneki kubekho utshintsho lwesinyithi okanye lwekhemikhali ngenxa yobushushu.
1,Inkqubo yokubeka i-electrodeposition: Inkqubo yokwenza ifilimu yokugquma ngaphakathi/ngaphandle komzimba wesithuthi ngokusebenzisa i-electrophoresis ngombane emva kokuntywilisela umzimba wesithuthi kwipeyinti yokuma kwe-electrode, ngenjongo yokuthintela ukugqwala komzimba wesithuthi.
- Ukufakwa kwe-Electrodeposition: Ukufakwa kwe-Electrodeposition yinkqubo yokupenda apho ipeyinti incamathiselwa ngombane ngokuntywilisela umzimba wemoto kwisisombululo sepeyinti kunye ne-anode okanye i-cathode ehambayo emzimbeni wemoto. Nangona kunjalo, yindlela efanelekileyo yokuvelisa ngobuninzi, kwaye kunzima ukuyipenda kwakhona xa ifilimu yokugquma incamathiselwe kwaye umbane ungahambi.
- Hlamba nge-DI
- Isithando Sokomisa I-Electrodeposition: Kwiingubo zokuhombisa ze-electrode cationic, ezisetyenziswa kakhulu, kusetyenziswa isithando sokomisa ubushushu kuba ifilimu ebekwe phezu komphezulu igudiswa yi-thermal fluidization yi-thermal crosslinking (thermal curing) reaction. Ubushushu kunye nexesha elifunekayo lokuhombisa ubushushu ziyahluka ngokuxhomekeke kwizinto, ubukhulu, kunye nokuma kwento eza kugqunywa. Kwimeko yento ebhityileyo egqunywe, ubushushu bomphezulu buyi-200-210°C kwaye ubushushu besithando sokutshisa buyi-210-230°C, kwaye ixesha lokufudumeza ngokubanzi liyimizuzu engama-20-30 iyonke imizuzu eli-10 nangaphezulu kwixesha lokufudumeza lento eza kugqunywa kunye nexesha lokubamba eliyi-200-210°C.
- Ukupholisha nge-electrodeposition: Gaya iindawo ezirhabaxa neziphumayo zomphezulu ukuze ube mpuluswa.
2, Ipeyinti yesiqingatha: Le yinkqubo yokufaka ipeyinti, edla ngokubizwa ngokuba yi-primer. Icoca umphezulu ukuze ulusu oluphezulu lunamathele kakuhle kwaye ludlala indima ekuphuculeni ukumelana nokugqwala. Ndisebenzisa umbala owahlukileyo kancinci kumbindi ukuze ufane nombala wolusu oluphezulu.
- Inkqubo ephakathi
- Isithando somlilo esomileyo esiphakathi
3, ijazi eliphezulu: Inkqubo yokufaka umbala wesithuthi obonakalayo kunye nokugqiba ngepeyinti ecacileyo. Kutshanje, ngenxa yemigaqo yokusingqongileyo, njl.njl., iipeyinti ezinobuhlobo nokusingqongileyo (umxholo wezinto eziguquguqukayo kancinci) zisetyenziswa kancinci kancinci. I-Coarse emva kwe-topcoat
- inkqubo yengubo ephezulu
- Isithando sokomisa i-Topcoat
※ Ukudluliselwa kobushushu kwindawo ye-electrode/ephakathi/ephezulu yokufudumeza kunye nokomisa iziko
Kwisithando sokomisa, ubushushu budluliselwa kumphezulu opeyintiweyo ngeendlela ezimbini.
Ukudibanisa: Ukuze kube lula ukufikelela kubushushu bokunyanga ubushushu befilimu yokugquma, kufuneka umoya ohamba ngokukhawuleza, kwaye ukujikeleza ngesantya esiphezulu kufunyanwa ngokujikelezisa umoya oshushu kwisithando sokomisa ngesantya esiphezulu somoya (ukudibanisa ngenkani).
Ubushushu obukhazimlayo: Udonga lufudunyezwa ukuya kutsho kwiidigri ezingamakhulu aliqela ngaphezu kobushushu bokugquma befilimu yokugquma kwi-oven eyenzelwe ngokukodwa ukomisa, kwaye ubushushu obufudumeleyo budluliselwa kumphezulu opeyintiweyo ngendlela efanayo nesitovu esifudumeza ngayo umzimba.
Ixesha lokuthumela: Novemba-08-2022
